Injection molding device for preparing electric appliance plastic products

Abstract

The utility model discloses an injection molding device for preparing plastic products of electrical appliances, which comprises a main body, a preheating mechanism and an operating mechanism, the preheating mechanism comprises a feeding box, a first motor, a heat insulation plate, a heating pad and a stirring and mixing mechanism, and the stirring and mixing mechanism comprises a rotating shaft, a propeller blade, a stirring plate, a return box and a sealing door. The running mechanism comprises a hydraulic cylinder, a sliding frame, a second motor, a screw rod, a conveying pipe and a heater, under the mutual matching action of all the mechanisms, moisture in particles can be effectively removed by preheating hygroscopic plastics such as nylon (PA) and polycarbonate (PC), the defects of bubbles, crazes and the like in the forming process are avoided, and the service life of the hygroscopic plastics is prolonged. And secondly, the device can use recycled materials, so that the cost of raw materials can be effectively reduced, the uniform mixing function can ensure that the recycled materials and new materials achieve consistent performance in the machining process, and the problem of uneven quality is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic production, specifically to an injection molding device for preparing electric appliance plastic products. BACKGROUND

[0002] The injection molding device for preparing electric appliance plastic products is an industrial equipment specially used for producing plastic parts, which mainly manufactures various plastic parts in electric appliances through injection molding process.

[0003] The conventional injection molding machine cannot effectively remove the moisture in the material without preheating function, which leads to the evaporation of water during the heating and melting process, resulting in bubbles and silver lines in the finished product, and even affecting the mechanical properties.

[0004] Secondly, if there is no uniform mixing function, recycled materials and new materials may not be mixed uniformly, resulting in differences in material properties at different positions, different performance of recycled materials and new materials, and poor mechanical strength and flowability of recycled materials.

[0005] Finally, if the screw extrusion conveying function is lacking, the melting and conveying process of plastic particles in the barrel will become unstable, and problems such as insufficient feeding and uneven extrusion may occur. INVENTION CONTENTS

[0006] (I) Technical problems solved

[0007] In view of the deficiencies of the prior art, the utility model provides an injection molding device for preparing electric appliance plastic products.

[0008] (II) Technical scheme

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an injection molding device for preparing electric appliance plastic products, comprising a main body, a preheating mechanism and a running mechanism, the preheating mechanism comprising a feeding box, a first motor, a heat insulation plate, a heating pad and a stirring and mixing mechanism, the first motor being fixedly installed on the heat insulation plate, the heat insulation plate being fixedly installed on the feeding box, the heating pad being fixedly installed on the feeding box, the stirring and mixing mechanism comprising a rotating shaft, a propeller blade, a stirring plate, a return box and a closing door, the rotating shaft being fixedly connected with the first motor output end, the propeller blade being arranged on the rotating shaft, the stirring plate being installed on the rotating shaft and being rotatably connected with the rotating shaft, the return box being fixedly installed on one side of the feeding box, the closing door being installed on the return box and being rotatably connected with the return box.

[0010] Preferably, the operating mechanism comprises a hydraulic cylinder, a sliding frame, a second motor, a screw rod, a conveying pipe and a heater, the hydraulic cylinder is fixedly installed on the main body, the sliding frame is installed on the main body and is in sliding connection with the main body, the second motor is fixedly installed on the sliding frame, one end of the screw rod is fixedly connected with the output end of the second motor, the heater is fixedly installed on the main body, and the conveying pipe is installed in the screw rod.

[0011] Preferably, a sealing ring is fixedly installed on the conveying pipe, the screw rod penetrates into the conveying pipe through the sealing ring, and the sliding frame is provided with a positioning hole and a pressure bearing block, so that the sliding frame is facilitated to slide.

[0012] Preferably, the main body is provided with a positioning plate and a pressure bearing groove, the positioning plate and the pressure bearing groove are in sliding connection with the positioning hole and the pressure bearing block respectively, and the sliding frame is facilitated to normally slide.

[0013] Preferably, the screw rod is provided with an extrusion block, the conveying pipe is provided with a discharge port, the extrusion block is in matched connection with the conveying pipe, and the discharge port is arranged at one end of the conveying pipe, so that the material in the conveying pipe is facilitated to be conveyed.

[0014] Preferably, the feeding tank is provided with a feeding pipe, the feeding tank is internally provided with a first baffle and a second baffle, and the feeding pipe is arranged at one side of the feeding tank, so that the material in the mixing return tank is facilitated to be mixed.

[0015] Preferably, the first baffle and the second baffle are provided with flow-through holes, the rotating shaft is provided with a branch rod, and the rotating plate is installed on the branch rod and is in rotating connection with the branch rod, so that the material in the feeding tank is facilitated to be uniformly preheated.

[0016] Preferably, the bottom of the feeding tank is provided with a receiving opening, and the receiving opening is in fixed connection with the conveying pipe, so that the material is facilitated to be timely sent into the conveying pipe.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the injection molding device for preparing electric appliance plastic products has the following beneficial effects:

[0019] In the utility model, through the cooperation of the preheating mechanism, the feeding tank, the first motor, the heat insulation plate, the heating pad and the stirring and mixing mechanism, the preheating of the device can effectively remove the moisture in the particles, so as to avoid the generation of defects such as bubbles and silver lines in the molding process.

[0020] The utility model discloses a stirring and mixing mechanism is provided, under the mutual cooperation of rotating shaft, propeller blade, agitating plate, return material box and closure door etc.

[0021] The utility model discloses a running mechanism is provided, under the mutual cooperation of hydraulic cylinder, sliding frame, second motor, screw rod, conveying pipe and heater etc. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is an overall structure schematic diagram of injection molding device for electric appliance type plastic product preparation in the utility model;

[0023] Figure 2 It is the explosion view of stirring and mixing mechanism in the utility model;

[0024] Figure 3 It is the internal structure section view of material inlet box in the utility model;

[0025] Figure 4 It is the schematic diagram of running mechanism in the utility model;

[0026] Figure 5 It is the explosion view of running mechanism in the utility model.

[0027] In the drawing: 1, main body;2, material inlet box;3, first motor;4, heat insulating plate;5, heating pad;6, rotating shaft;7, propeller blade;8, agitating plate;9, return material box;10, closure door;11, hydraulic cylinder;12, sliding frame;13, second motor;14, screw rod;15, conveying pipe;16, heater;17, sealing ring;18, positioning hole;19, pressure bearing block;20, positioning plate;21, pressure bearing groove;22, extrusion block;23, discharge port;24, feed pipe;25, first baffle;26, second baffle;27, flow-through hole;28, branch rod;29, storage opening. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5 The utility model provides an injection molding device for preparing plastic product of electric appliance, including main part 1, preheating mechanism and operating mechanism, preheating mechanism includes feed tank 2, first motor 3, heat insulating plate 4, heating pad 5 and stirring and mixing mechanism, first motor 3 is fixedly installed on heat insulating plate 4, heat insulating plate 4 is fixedly installed on feed tank 2, heating pad 5 is fixedly installed on feed tank 2, stirring and mixing mechanism includes rotating shaft 6, propeller blade 7, stirring plate 8, return tank 9 and closure door 10, rotating shaft 6 is fixedly connected with the output end of first motor 3, propeller blade 7 is arranged on rotating shaft 6, stirring plate 8 is installed on rotating shaft 6 and is rotatably connected with rotating shaft 6, return tank 9 is fixedly installed on one side of feed tank 2, closure door 10 is installed on return tank 9 and is rotatably connected with return tank 9.

[0031] In the embodiment, preheating mechanism includes feed tank 2, first motor 3, heat insulating plate 4, heating pad 5 and stirring and mixing mechanism, when using, plastic material enters the tank 2 in feed pipe 24, and the return tank 9 of one side needs to open the sealing door, then put in the material of recycling, and in the process, first motor 3 is started on heat insulating plate 4, and heating pad 5 is also started simultaneously, and the material in feed tank 2 is preheated.

[0032] In the embodiment, stirring and mixing mechanism includes rotating shaft 6, propeller blade 7, stirring plate 8, return tank 9 and closure door 10, when using, rotating shaft 6 is rotated under the start of first motor 3, so that propeller blade 7 starts to receive the recycled material in return tank 9 and the material in feed pipe 24, and under the rotation of stirring shaft, slowly falls on the second baffle 26 on feed tank 2 in the flow-through hole 27 of first baffle 25, and along with the rotation of rotating shaft 6, stirring plate 8 on branch 28 starts to stir the mixed material, and along with the heating of heating pad 5, preheating is completed, finally falls in the storage opening 29 on feed tank 2 in the flow-through hole 27 on second baffle 26, and finally enters conveying pipe 15.

[0033] In this embodiment, the operating mechanism includes a hydraulic cylinder 11, a sliding frame 12, a second motor 13, a screw rod 14, a conveying pipe 15 and a heater 16. In use, the second motor 13 is driven to directly drive the screw rod 14 to rotate in the conveying pipe 15, thereby extruding the material falling from the receiving opening 29, and the heater 16 starts to work to melt the material. When the material is transmitted to the discharge opening 23, the hydraulic cylinder 11 is activated to directly push the sliding frame 12 to slide on the main body 1. While the sliding frame 12 is sliding, the positioning plate 20 on the main body 1 slides in the positioning hole 18 in the sliding frame 12, and the pressure block 19 on the sliding frame 12 slides in the pressure groove 21 on the main body 1, so that the second motor 13 can push the screw rod 14 to slide in the sealing ring 17, and the sliding of the screw rod 14 enables the extrusion block 22 at the top end of the screw rod 14 to be connected with the discharge opening 23 of the conveying pipe 15.

[0034] Embodiment 2

[0035] In summary, in use, the plastic material enters the material box 2 through the feeding pipe 24, and the return material box 9 needs to open the sealing door to put in the recycled material. In this process, the first motor 3 installed on the heat insulation plate 4 is activated, and the heating pad 5 is also activated to preheat the material in the material box 2. After the material is preheated, the rotating shaft 6 is rotated under the activation of the first motor 3, so that the propeller blade 7 starts to receive the recycled material entering the return material box 9 and the material in the feeding pipe 24, and under the rotation of the stirring shaft, slowly falls into the second baffle 26 on the material box 2 through the flow-through hole 27 of the first baffle 25, and with the rotation of the rotating shaft 6, the stirring plate 8 on the branch rod 28 starts to stir the mixed material, and the heating pad 5 completes the preheating. Finally, the material falls into the receiving opening 29 on the material box 2 through the flow-through hole 27 on the second baffle 26, and finally enters the conveying pipe 15. The material is melted during the conveying process, thereby starting the injection molding. The second motor 13 is driven to directly drive the screw rod 14 to rotate in the conveying pipe 15, thereby extruding the material falling from the receiving opening 29, and the heater 16 starts to work to melt the material. When the material is transmitted to the discharge opening 23, the hydraulic cylinder 11 is activated to directly push the sliding frame 12 to slide on the main body 1. While the sliding frame 12 is sliding, the positioning plate 20 on the main body 1 slides in the positioning hole 18 in the sliding frame 12, and the pressure block 19 on the sliding frame 12 slides in the pressure groove 21 on the main body 1, so that the second motor 13 can push the screw rod 14 to slide in the sealing ring 17, and the sliding of the screw rod 14 enables the extrusion block 22 at the top end of the screw rod 14 to be connected with the discharge opening 23 of the conveying pipe 15.

[0036] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described one by one here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for preparing plastic products of electrical appliances, comprising a main body (1), a preheating mechanism and a running mechanism, characterized in that, The preheating mechanism comprises a feeding box (2), a first motor (3), a heat insulation plate (4), a heating pad (5) and a stirring and mixing mechanism, the first motor (3) is fixedly installed on the heat insulation plate (4), the heat insulation plate (4) is fixedly installed on the feeding box (2), the heating pad (5) is fixedly installed on the feeding box (2), the stirring and mixing mechanism comprises a rotating shaft (6), a propeller blade (7), a stirring plate (8), a return box (9) and a closing door (10), the rotating shaft (6) is fixedly connected with the output end of the first motor (3), the propeller blade (7) is arranged on the rotating shaft (6), the stirring plate (8) is installed on the rotating shaft (6) and rotationally connected with the rotating shaft (6), the return box (9) is fixedly installed on one side of the feeding box (2), and the closing door (10) is installed on the return box (9) and rotationally connected with the return box (9).

2. The injection molding device for preparing plastic products of electric appliances according to claim 1, characterized in that: The running mechanism comprises a hydraulic cylinder (11), a sliding frame (12), a second motor (13), a screw rod (14), a conveying pipe (15) and a heater (16), the hydraulic cylinder (11) is fixedly installed on the main body (1), the sliding frame (12) is installed on the main body (1) and slidably connected with the main body (1), the second motor (13) is fixedly installed on the sliding frame (12), one end of the screw rod (14) is fixedly connected with the output end of the second motor (13), the heater (16) is fixedly installed on the main body (1), and the conveying pipe (15) is installed in the screw rod (14).

3. The injection molding device for preparing plastic products of electric appliances according to claim 2, characterized in that: A sealing ring (17) is fixedly installed on the conveying pipe (15), the screw rod (14) penetrates through the sealing ring (17) and enters the conveying pipe (15), and the sliding frame (12) is provided with a positioning hole (18) and a pressure bearing block (19).

4. The injection molding device for preparing plastic products of electric appliances according to claim 3, characterized in that: The main body (1) is provided with a positioning plate (20) and a pressure bearing groove (21), and the positioning plate (20) and the pressure bearing groove (21) are slidably connected with the positioning hole (18) and the pressure bearing block (19) respectively.

5. The injection molding device for preparing plastic products of electric appliances according to claim 2, wherein: An extrusion block (22) is arranged on the screw rod (14), an outlet (23) is arranged on the conveying pipe (15), the extrusion block (22) is connected with the conveying pipe (15), and the outlet (23) is arranged at one end of the conveying pipe (15).

6. The injection molding device for preparing plastic products of electric appliances according to claim 1, characterized in that: A feeding pipe (24) is arranged on the feeding box (2), and first and second baffles (25 and 26) are arranged in the feeding box (2), and the feeding pipe (24) is arranged on one side of the feeding box (2).

7. The injection molding device for preparing plastic products of electric appliances according to claim 6, characterized in that: Flow-through holes (27) are arranged on the first and second baffles (25 and 26), and a branch rod (28) is arranged on the rotating shaft (6), and the stirring plate (8) is installed on the branch rod (28) and rotationally connected with the branch rod (28).

8. The injection molding device for preparing plastic products of electric appliances according to claim 2, characterized in that: A receiving opening (29) is arranged at the bottom of the feeding box (2), and the receiving opening (29) is fixedly connected with the conveying pipe (15).

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